Stone-working machine



Dec. 31, 1929.

P. s; LEGGE STONE WORKING MACHINE Filed Aug. 2. 1927 Inven'ov:

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D. 31, 1929. P, s, LEGGE 1,741,322

STONE WORKING MACHINE Peis?- illegge Patented Dec. 31, 1929 PETER S.LEGGE, OF POMPTON LAKES, NEW JERSEY STONE-WORKING MACHINE Applicationfiled August 2, 1927. Serial No. 210,073.

My invention relates to stone working machines, and particularly but notexclusively to one for cutting the cores of monolithic receptacles.

According to the common method of forming a monolithic receptacle ablock of stone is channeled adjacent its four sides to a depthcorresponding to the bottom of the inside of the receptacle, and thecore is then removed by chipping or breaking out the material be tweenthe channels. My invention among other things comprehends the removal ofthe core in an unbroken state, and will be best understood from thefollowing description when read in the light of the accompanyingdrawings of a specific embodiment of my'invention selected forillustrative purposes, while the scope of the invention will be moreparticularly pointed out in the appended claims.

In the drawings Fig. 1 is a planV of a machine constructed according tomy invention;

Fig. 2 is a section on the line 2-2 of Fig. 1,

with parts omitted;

Fig. 3 is a section on the line 3 3 of Fig 1, with parts shown inelevation;

Fig. t is a section on the line 4-t of Fig. 'il g Fig. 5 is a section onthe line 5-5 of Fig. Li;

Fig. 6 is a fragmentary view on an enlarged scale corresponding to thelower end of one of the right hand posts in Fig. 1,-with parte brokenaway; and Y Fig. 7 is a section on the line 3-3 of Fig. 35 1 of thelower end of the post at the lower left hand corner of that ligure.

Referring to the drawings the illustrative embodiment of the inventioncomprises four A sleeves 1, each of which` is provided with Otdiametrically opposite lateral bosses 3 and with diametrically oppositelateral bosses 5, the respective bosses 3 and 5 being arranged inquartering relation, but the bosses 5 being below the bosses 3. As shownthe bosses are .V 4') perforated tor receiving the transversely arrangedbars 7 and longitudinally arranged.`

bars 9 which hold the sleeves in spaced relation, said sleeves hereinbeing at the corners of a rectangle. Conveniently the barsare slidablymounted in the perforations of the respective bosses and cooperate withset-screws 11, which construction permits the sleeves 1 to be adjustedrelative to each other so as to. position them at the corners ofdifferent size rectangles.

As shown each sleeve has mounted thereinv a vertically slidable post 13,the several posts carrying longitudinally arranged racks 15 set intogrooves 17 (Fig. 5) on the surfaces of t-he posts. As shown the sleevesopposite the racks are formed with longitudinally eX- tending slots 19which the racks enter, thus splining the posts to the sleeves forprevent-` ing relative rotation between the two, while allowing theposts to slide in the sleeves. Meshing with each o-f the racks 15 is a`gear wheel 21 rotation of which is effective to raise and lower theposts. As shown the sleeves 1 are provided with laterallugs 23 which areslotted as indicated at 25 for receiving the gear wheels 21 and areperforated as indicated at 27 to form bearings for rotatable shafts 29.As shown the two gear wheels 21 at the left hand end of the machine, asviewed in Fig. 1, are splined to the shafts 29, the shafts for thispurpose having longitudinal slots 31 and the gear wheels having lugs(not shown) slidably tting these grooves. It will be observed that thisconstruction permits the two left hand sleeves 1, as viewed in Fig. 1,together with the gear wheels 21, to be slid toward the sleeves 1 at theright hand end of the machine for shortening the rectangular relationbetween the four sleeves without destroying the operative relationbetween the l shafts 29 and said gear wheels.

Conveniently the gear wheels 21 associated with the two sleeves 1 at theright hand end of the machine, as viewed in Fig. 1, are Xed to theshafts 29, and for rotating the shafts 9@ 29 in unison said shafts attheir right hand ends are provided with bevel gears 33 meshing withbevel gears 35 respectively carried at the opposite ends of alay shaft37, rotation of said lay shaft being effective to rotate the 9* shafts29 and thereby move the posts relative to the sleeves simultaneouslythrough equal distances. As shown the bevel gear 35 at the upper end ofthe shaft 37, as viewed in Fig. 1, is splined to said shaft, the latterhaving 1 the longitudinal slot 39 and the bevel gear having theextension 41 provided with a lug (not shown) fitting the slot, saidextension 41 being journalled in a bracket 43 formed integrally with theadjacent sleeve 1. The extension 41 of the gear wheel 35, just referredto, may be held against longitudinal movement relative to the bracket 43in any convenient manner, the spline connection betwen the gear wheeland lay shaft 37 permitting the two upper sleeves 1 and associatedparts, as viewed in Fig. 1, to be moved toward the two lower sleeves ofthat ligure without destroying the operative relation between the fmeshing bevel gears 33 and 35 at the upper right hand corner of thatligure, which construction permits the rectangular relation between thesleeves, as viewed in Fig. 1, to be narrowed.

As shown the two posts 13 at the right hand end of the machine, asviewed in Fig. 1, at their lower ends carry grooved pulleys 45journalled on horizontal spindles 47 on the end of a caster bracket 49,the spindle 51 of which bracket has a vertical axis and is swivelled inthe end of the post.

rlhe posts 13 at the left hand end of the machine, as viewed in Fig. 1,are shown as provided with perforations 53 in which are mounted spindles55, the latter l'iaving journalled thereon at their lower ends the hubs57 of the grooved pulleys 59, the pulleys being prevented fromlongitudinal movement relative to the spindles by providing the latterwith annular grooves G1 which receive transverse pins-63 carried by thehubs 57. At their upper ends the spindles 55 are screw threaded and arereceived in screw threaded perforations formed in nuts 65 non-rotatablycarried by the upper ends of the corresponding posts, the spindles beingprovided with hand-wheels 67 for rotating them so as to raise thepulleys 59 into recesses 69 formed in the ends of the posts, felt drlike washers 71 being provided for preventing the entrance of sludge andwater into the recesses.

As shown the two lower longitudinally arranged bars 9, as viewed in Fig.1, are eX- tended to the right past the lower right hand sleeve 1 ofthat figure and carry a bracket 7 3 in which is journalled a shaft'7 5having thereon a driving pulley 77 which may be rotated in any suitablemanner, as for eX- ample by the driving belt 7 9 indicated in Fig. 3. Onthe shaft is shown a drum 81 aboutwhich are wrapped one 0r more turns ofa suitable wire cable 83, the sleeve 1 at the lower right hand corner ofthe machine, as viewed in Fig. 1, having a grooved pulley 85 about whichthe cable is passed and led downward through a groove 87 on the adjacentpost and through the perforation 89 of the spindle 51 to the adjacentgrooved pulley 45, whence the cable is passed around the two groovedpulleys 59 at the left hand end of the machine, as viewed inV Fig. 1,and then vice herein indicated by the weight 9,3 having a roller 96resting upon the cable adjacent the drum.

As shown one end of the driving shaft 75 is provided with a. chainsprocket wheel 97, and the lay shaft 37 with a larger chain sprocketwheel 99, about which sprocket wheels is passed a driving chainindicated at 101. Herein clutch mechanism 103, having the operatinghandle pivoted to a bar 107 carried by the transversely arranged bars 7at the right hand end of the machine, as viewed in Fig. 1, is providedfor clutching` the chain sprocketwheel 99 to the lay shaft -37 so thatwhen the drum 81 is rotated the lay shaft will be rotated to cause theposts to be fed downward, as viewed in Figs. 2 and 3. Conveniently thelay shaft 37 may be provided with a hand-wheel 109 which may be used torotate the lay shaft 37 upon disengagement of the operative connectiontherewith of the chain sprocket wheel 99 when the clutch 103 isreleased.

As one example of use to which the machine may be put, but withoutlimitation thereto, vertical holes corresponding to the corners of thecore to be removed from the stone, said holes having diameterssuflicient to receive the posts 13, may be drilled in the stone, and themachine placed on the stone with the lengths of wires between thepulleys 45 and 59 resting upon the upper surface of the stone. Rotationof the shaft 75 will then cause' the cable to move and cut a channel inthe stone corresponding to three sides of the core, the posts being feddownward so as to advance the-cut either by the power or manual meansherein described, shot and water conveniently being fed to the slotbeing cut to cause the cable more effectively to operate upon the stone.Then the posts have been fed to bring the cable to the bottom of the'holes formed at the corners corresponding to the corners of the core,the hand-wheels 67 may be turned to raise the pulleys 59 into therecesses 69, which will disengage the cables from said pulleys.Continued operation of the machine will then sever the bottom of thecore, the tensioning device exemplified by the weight 93 taking uptheslack in the cable as the cut severing the bottom of the coreprogresses, the clutch 103 being operated to disconnect the chainsprocket wheel 99 from the lay shaft 37 during this operation ofsevering the bottom'of the core, and the spindles 51 supporting thepulleys 45 swivelling during this operation to keep said pulleys and theadjacent horizontal portions of the cable in the same plane so as toprevent the cables from slipping from the grooves of said pulleys. Afterthe bottom of the core is severed the machine may be removed and turnedaround to cut the remaining side of the core.

Although I have described a specified construction of machine madeaccording to my invention, and one particular' Way of using the machine,it Will be understood that Wide deviations be made from these withoutdeparting from the spirit of the invention.

Claims:4

l. A machine for use in cutting mono lithic receptacles having, incombination, saw supporting means adapted to enter holes formed in thestone at the corners of the core, means for feeding said supportingmeans into said holes, and pulleys Icarried by said supporting means forguiding a flexible saw arranged to cut simultaneously consecutive naidesof said core.

2. A machine Y for use in cutting monolithic receptacles having, incombination, savT supporting means adapted to enter holes formed in thestone at the corners of the core, means for feeding said supportingmeans into said holes, and pulleys carried by said supporting means forguiding a flexible sa-W arranged to cut simultaneously opposite sicesand an end of said core.

3. A machine for use in cutting monolithic receptacles having, incombination, saw supporting means adapted to enter holes formed in thestone at the corners of the core, means for feeding said supportingmeans into said holes, pulleys carried by said supporting means forguiding a flexible saw arranged to cut the sides of said core, and meanscooperating With a plurality of said pulleys for disengaging said sawtherefrom While said pulleys are in said holes.

4. A machine for use in cutting monolithic receptacles having, incombination, saiv supporting means adapted to enter holes formed in thestone at the corners of the core, neans for feeding said supportingmeans into said holes, pulleys carried by said supporting means forguiding a flexible saw arranged to cut simultaneously consecutive sidesof said core, and means cooperating with a plurality of said pulleys fordisengaging said saw therefrom While said pulleys are in said holes.

5. A machine for use in cutting monolithic receptacles having, incombination, saw supporting means adapted to enter holes formed in thestone at the corners of the core, means for feeding said supportingmeans into said holes, pulleys carried by said supporting means forguiding a flexible saw arranged to cut simultaneously opposite sides andan end of said core, and means cooperating With a plurality of saidpulleys for disengaging said saw therefrom While said pulleys are insaid holes.

6. A machine for use in cutting monolithic receptacles having, incombination, a support, posts slidably carried by said support at thel'corners of a polygon, pulleys on said posts at one end thereof forguiding a flexible saw, and means for simultaneously feeding said postsrelative to said support.

7. A machine for use in cutting monolithic receptacles having, incombination, a plurality of posts, pulleys carried by one end of eachpost for guiding a flexible saw, guides in Which said posts are slidablymounted for longitudinal movement, and a support for said guides havingprovision for adjusting them relatively to each other to position themat the corners of different size polygons.

8. A machine for use in cutting monolithic receptacles having, incombination, a plurality of pulleys for guiding a flexible saw of thecable type, means for supporting said pulleys While positioned in holesformed in the stone at corners of a polygon, and means forsimultaneously driving said saw and feedii said pulleys along said holesWhile maintaining said pulleys substantially' in common plane.

9. A machine for use in cutting monolithic receptacles having, incombination, apair of pulleys for supporting and guiding a flexible sauTfor severing the bottom of the core, means for supporting said pulleysat the bottom of holes formed at corners of said core, said pulleysbeingV swivelled on axes substantially at right angles to the plane ofthe bottom of said core.

l0. A machine for use in cutting monolithic receptacles having, incombination, a frame, sleeves carried by said frame at they four cornersof substantially a parallelogram, posts slidably mounted in saidsleeves, means for sliding said posts simultaneously in said sleeves,pulleys on the ends of said posts, said posts and pulleys adapted to beinserted into holes in the stone at the corners of said parallelogram,passages for a flexible saw formed in one or more of said posts, andmeans including a drum and pulleys carried by said frame for drivingsaid flexible saw and guiding it from the exterior of the stone to saidpulleys on the ends of said posts.

11. A machine for use in cutting monolithic receptacles having, incombination, a frame, sleeves carried by said frame at the four cornersof substantially a parallelogram, posts slidably mounted in saidsleeves, means for sliding said posts simultaneously in said sleeves,pulleys on the ends of said posts, said posts and pulleys adapted to beinserted into holes in the stone at the corners of said parallelogram,passages for flexible saw formed in one or more of said posts, meansincluding a drum and pulleys carried by said frame for driving` saidflexible saw and guiding it from the exterior of the stone to saidpulleys on the ends of said posts, and means operative from the exteriorof the stone while said posts are in said holes for disengaging the sawfrom one or more of said pulleys on the ends of said posts.

12. A machine for use in cutting monolithic receptacles having, incombination, a trame, sleeves carried by said frame at the four cornersof substantially a parallelogram, posts slidably mounted in saidsleeves, means for sliding said posts simultaneously in said sleeves,pulleys on the ends of said posts, said posts and pulleys adapted to beinserted into holes in the stone at the corners of said parallelogrampassages for a flexible saw formed in one or more ot said pos s, andmeans including a drum and pulleys carried by said frame for drivingsaid flexible saw and guiding it from the exterior oit the stone to saidpulleys on the ends of said posts, the pulleys on the ends of a. pairoit adjacent posts being mounted for swivelling on axes extendinglengthwise of said posts.

13. A machine 'for use in cutting monolithic receptacles having, incombination, a frame, sleeves carried by said frame at the tour cornersof substantially a paiallelogram, posts slidably mounted in said seeves,means for sliding said posts simultaneously in said sleeves, pulleys onthe ends of said posts, said posts and pulleys adapted to be insertedinto holes in the -stone at the corners of said parallelegram,

passages for a iiexible saw formed in one or more of sald posts, meansincluding a drum 'and pulleys carried by said iframe for driving saidiexible saw and guiding it from the exterior of the stone tosaid pulleyson the ends ot said posts; the pulleys en the ends of a pair of adjacentposts being mounted for swivelling on axes extending lengthwise of saidposts, and means operative from the exterior of the stone while saidposts are in said holes for disengaging the saw from the pulleys at theends of the remaining pair of posts.

In testimony whereof, I have signed my name to this specification.

PETER, S. LEGGE.

